公开(公告)号：US11757375B2

公开(公告)日：2023-09-12

申请号：US17719789

申请日：2022-04-13

Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE

Inventor： Wan-Pei Chen ,  Yoshihiro Konishi ,  Kuan-Wen Chen ,  Yeh-Hsiang Ho ,  Wan-Ju Ho

IPC: H02M7/5387 ,  H02M1/00 ,  H02M1/14

CPC classification number: H02M7/53871 ,  H02M1/0009 ,  H02M1/14 ,  H02M7/53873

Abstract: A DC-AC inverter system using a state observer and a control method thereof are provided. The control method of the DC-AC inverter system includes the following steps. The state observer outputs a filter-capacitor-current estimation value at a next sampling time according to a DC link voltage at a current sampling time and a filter-capacitor-voltage actual value at the current sampling time. The filter-inductor-current estimation value at the next sampling time is compared with the filter-capacitor-current estimation value at the next sampling time to obtain a load current estimation value at the next sampling time. An inductor voltage estimator outputs a filter-inductor-voltage estimation value at the next sampling time according to the load current estimation value at the next sampling time. A feed-forward control is performed according to the filter-inductor-voltage estimation value at the next sampling time.

公开(公告)号：US10406643B2

公开(公告)日：2019-09-10

申请号：US15349239

申请日：2016-11-11

Applicant: Industrial Technology Research Institute

Inventor： Kun-Ying Li ,  Kuan-Wen Chen ,  Hsi-Hung Hsiao ,  Yung-Chao Chan ,  Shi-Jie Luo ,  Yu-Shiang Huang

IPC: B23Q11/14 ,  B23Q11/10 ,  B23Q17/20

Abstract: A machining thermostatic control system and method of using the same are disclosed. The system comprises a detecting unit, a processing unit and at least a cooling unit. The detecting unit is used for detecting the temperature distribution of a workpiece. The processing unit is coupled to the detecting unit and is used for processing the temperature distribution for obtaining a position of maximum hot spot of the workpiece. The cooling unit comprises a head which is provided for discharging cooling fluid and a plurality of blades which are angle-adjustably mounted to the head. The blades are coupled to the processing unit and the angle of blades are controlled by the processing unit for enabling the cooling fluid to flow toward to the position of maximum hot spot position.

公开(公告)号：US10393496B2

公开(公告)日：2019-08-27

申请号：US15851457

申请日：2017-12-21

Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE

Inventor： Chin-Ming Chen ,  Shang-Te Chen ,  Po-Hsiu Ko ,  Ren-Hao Lu ,  Szu-Chia Lin ,  Meng-Chiou Liao ,  Kuan-Wen Chen ,  Hsi-Hung Hsiao ,  Shou-Xuan Chang

IPC: G01B7/02 ,  B23Q17/00 ,  B25B5/16

Abstract: The disclosure is related to a clamp-type measuring device includes a clamp and an interval measuring module. The clamp includes a guiding rail and two holding arm. Each of holding arms includes a guide part, a connecting part, and a clamping part. The guide part is movably furnished on the guiding rail. Both ends of the connecting part are respectively connected to the guide part and the clamping part. The interval measuring module includes a first measuring element and a second measuring element. The first measuring element and the second measuring element are furnished on the two connecting parts respectively. The first measuring element and the second measuring element are slidable through the two guide parts respectively in order to measure an interval between the two clamping parts. In addition, the disclosure is also related to a measuring method of the clamp-type measuring device.